S-13 rocket in Black Shark

[isoul]

I got initiated from another post in the forum and did a little research on the S-13 rocket that the Ka-50 uses in-game.

 

As far as my research went I found 6 variants of rockets which are the following :

1) S-13 : Standard version. Penetration rocket used against bunkers/shelters or runways(penetrates 3m of ground of 1m of reinforced concrete).

2) S-13B : Same as standard version but with larger warhead.

3) S-13T : Same as standard version with two phase warhead(specializes in destruction of aircrafts in shelters).

4) S-13OF: High Explosive/Frag variant.

5) S-13D: FAE(Fuel-Air Explosive) variant, equivalent to 35-40kg TNT

6)S-13DF: FAE(Fuel-Air Explosive) variant, differs in range from D variant

 

I was wondering which one ED modeled and found out that :

 

A) after a search in the forum I 've seen posts that are reffering to S-13 as a penetration (anti-bunker) rocket.

B) the 3D-model used in-game is the one of the S-13OF variant(easily distinguished by the long tip which is actually a delay fuze)

C) the in-game encyclopedia refers to S-13 rockets but all the specifications(weights, dimensions etc.) are identical to S-13D or S-13DF variants.

 

Apart from these, the in-game explosion animation is quite large for an S-13 penetration rocket(which has only 1.82kg of explosive material). So, does anyone know which variant exactly ED modeled in DCS:BS?

Edited February 2, 2010 by isoul

[ZaltysZ]

There was S-13T prior the patch, however it was listed as S-13OF in mission editor. How is now, I don't know, but it is still listed as OF version. Either it has been silently changed to OF or has been left unfixed, because changelog does not mention S-13 at all.

[isoul]

If S-13OF is modeled the in-game 3D-model is correct but the dimensions, weights and warhead(equivalent to 32.5kg of TNT which are stated in encyclopedia) aren't correct. S-13OF is HE/Frag rocket with 7kg explosive material and 450 fragments (25-35gr each). I haven't found anywhere that this rocket has any significant penetration capabilities as some are stating in the forums(may be have been misled if it was S-13T before patch).

 

Still the blast shown in-game seems extraordinary big for a 7kg HE rocket. Any word from "ED officials" on the matter?

 

There was S-13T prior the patch, however it was listed as S-13OF in mission editor. How is now, I don't know, but it is still listed as OF version. Either it has been silently changed to OF or has been left unfixed, because changelog does not mention S-13 at all.

[ZaltysZ]

warheads.lua:

 

warheads["C_13"] = -- С-13ОФ HE
{
   expl_mass        = 33.0, -- Warhead 33 kg, explosive 7 kg + fragments bonus
   other_factors    = { 1.0, 1.0, 1.0 },
   concrete_factors = { 1.0, 1.0, 0.5 },
   concrete_obj_factor= 1.0;
   obj_factors      = { 1.0, 1.0 },
   cumulative_factor= 0.0,
   cumulative_thickness = 0.0
}; 

 

However, I think expl_mass should not be taken literally (like equivalent of TNT in kg). Instead, it seems like it is just a parameter, which allows to get realistic enough effect. Look at it like at damage_points or something like that, because that number combines damage done by explosion and fragments together.

 

After all, it seems like OF.

[isoul]

Exceptional work ZaltysZ! Looks like the S-13 is S-13OF afterall. Since ED states "Warhead 33 kg, explosive 7 kg + fragments" I have no reason to believe that there is done something by mistake. The number 33 may mean anything and of course can't translate to TNT mass unless a dev says so!

 

The file is interesting to investigate further... wanna check S-8KOM and OFP2!

 

warheads.lua:

 

warheads["C_13"] = -- С-13ОФ HE
{
   expl_mass        = 33.0, -- Warhead 33 kg, explosive 7 kg + fragments bonus
   other_factors    = { 1.0, 1.0, 1.0 },
   concrete_factors = { 1.0, 1.0, 0.5 },
   concrete_obj_factor= 1.0;
   obj_factors      = { 1.0, 1.0 },
   cumulative_factor= 0.0,
   cumulative_thickness = 0.0
}; 

However, I think expl_mass should not be taken literally (like equivalent of TNT in kg). Instead, it seems like it is just a parameter, which allows to get realistic enough effect. Look at it like at damage_points or something like that, because that number combines damage done by explosion and fragments together.

 

After all, it seems like OF.